949 lines
30 KiB
C++
949 lines
30 KiB
C++
/*
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Formatting library for C++
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Copyright (c) 2012 - 2015, Victor Zverovich
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "format.h"
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#include <string.h>
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#include <cctype>
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#include <cerrno>
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#include <climits>
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#include <cmath>
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#include <cstdarg>
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#include <cstddef> // for std::ptrdiff_t
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#if defined(_WIN32) && defined(__MINGW32__)
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# include <cstring>
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#endif
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#if FMT_USE_WINDOWS_H
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# if defined(NOMINMAX) || defined(FMT_WIN_MINMAX)
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# include <windows.h>
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# else
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# define NOMINMAX
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# include <windows.h>
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# undef NOMINMAX
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# endif
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#endif
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using fmt::internal::Arg;
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#if FMT_EXCEPTIONS
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# define FMT_TRY try
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# define FMT_CATCH(x) catch (x)
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#else
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# define FMT_TRY if (true)
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# define FMT_CATCH(x) if (false)
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#endif
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#ifdef FMT_HEADER_ONLY
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# define FMT_FUNC inline
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#else
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# define FMT_FUNC
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#endif
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#ifdef _MSC_VER
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# pragma warning(push)
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# pragma warning(disable: 4127) // conditional expression is constant
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# pragma warning(disable: 4702) // unreachable code
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// Disable deprecation warning for strerror. The latter is not called but
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// MSVC fails to detect it.
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# pragma warning(disable: 4996)
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#endif
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// Dummy implementations of strerror_r and strerror_s called if corresponding
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// system functions are not available.
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static inline fmt::internal::Null<> strerror_r(int, char *, ...) {
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return fmt::internal::Null<>();
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}
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static inline fmt::internal::Null<> strerror_s(char *, std::size_t, ...) {
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return fmt::internal::Null<>();
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}
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namespace fmt {
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namespace {
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#ifndef _MSC_VER
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# define FMT_SNPRINTF snprintf
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#else // _MSC_VER
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inline int fmt_snprintf(char *buffer, size_t size, const char *format, ...) {
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va_list args;
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va_start(args, format);
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int result = vsnprintf_s(buffer, size, _TRUNCATE, format, args);
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va_end(args);
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return result;
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}
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# define FMT_SNPRINTF fmt_snprintf
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#endif // _MSC_VER
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#if defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
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# define FMT_SWPRINTF snwprintf
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#else
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# define FMT_SWPRINTF swprintf
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#endif // defined(_WIN32) && defined(__MINGW32__) && !defined(__NO_ISOCEXT)
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// Checks if a value fits in int - used to avoid warnings about comparing
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// signed and unsigned integers.
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template <bool IsSigned>
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struct IntChecker {
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template <typename T>
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static bool fits_in_int(T value) {
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unsigned max = INT_MAX;
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return value <= max;
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}
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static bool fits_in_int(bool) {
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return true;
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}
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};
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template <>
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struct IntChecker<true> {
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template <typename T>
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static bool fits_in_int(T value) {
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return value >= INT_MIN && value <= INT_MAX;
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}
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static bool fits_in_int(int) {
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return true;
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}
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};
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const char RESET_COLOR[] = "\x1b[0m";
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typedef void(*FormatFunc)(fmt::Writer &, int, fmt::StringRef);
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// Portable thread-safe version of strerror.
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// Sets buffer to point to a string describing the error code.
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// This can be either a pointer to a string stored in buffer,
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// or a pointer to some static immutable string.
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// Returns one of the following values:
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// 0 - success
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// ERANGE - buffer is not large enough to store the error message
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// other - failure
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// Buffer should be at least of size 1.
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int safe_strerror(
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int error_code, char *&buffer, std::size_t buffer_size) FMT_NOEXCEPT{
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FMT_ASSERT(buffer != 0 && buffer_size != 0, "invalid buffer");
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class StrError {
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private:
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int error_code_;
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char *&buffer_;
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std::size_t buffer_size_;
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// A noop assignment operator to avoid bogus warnings.
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void operator=(const StrError &) {}
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// Handle the result of XSI-compliant version of strerror_r.
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int handle(int result) {
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// glibc versions before 2.13 return result in errno.
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return result == -1 ? errno : result;
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}
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// Handle the result of GNU-specific version of strerror_r.
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int handle(char *message) {
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// If the buffer is full then the message is probably truncated.
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if (message == buffer_ && strlen(buffer_) == buffer_size_ - 1)
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return ERANGE;
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buffer_ = message;
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return 0;
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}
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// Handle the case when strerror_r is not available.
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int handle(fmt::internal::Null<>) {
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return fallback(strerror_s(buffer_, buffer_size_, error_code_));
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}
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// Fallback to strerror_s when strerror_r is not available.
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int fallback(int result) {
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// If the buffer is full then the message is probably truncated.
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return result == 0 && strlen(buffer_) == buffer_size_ - 1 ?
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ERANGE : result;
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}
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// Fallback to strerror if strerror_r and strerror_s are not available.
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int fallback(fmt::internal::Null<>) {
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errno = 0;
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buffer_ = strerror(error_code_);
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return errno;
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}
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public:
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StrError(int err_code, char *&buf, std::size_t buf_size)
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: error_code_(err_code), buffer_(buf), buffer_size_(buf_size) {}
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int run() {
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strerror_r(0, 0, ""); // Suppress a warning about unused strerror_r.
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return handle(strerror_r(error_code_, buffer_, buffer_size_));
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}
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};
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return StrError(error_code, buffer, buffer_size).run();
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}
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void format_error_code(fmt::Writer &out, int error_code,
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fmt::StringRef message) FMT_NOEXCEPT{
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// Report error code making sure that the output fits into
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// INLINE_BUFFER_SIZE to avoid dynamic memory allocation and potential
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// bad_alloc.
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out.clear();
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static const char SEP[] = ": ";
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static const char ERROR_STR[] = "error ";
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fmt::internal::IntTraits<int>::MainType ec_value = error_code;
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// Subtract 2 to account for terminating null characters in SEP and ERROR_STR.
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std::size_t error_code_size = sizeof(SEP) + sizeof(ERROR_STR) - 2;
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error_code_size += fmt::internal::count_digits(ec_value);
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if (message.size() <= fmt::internal::INLINE_BUFFER_SIZE - error_code_size)
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out << message << SEP;
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out << ERROR_STR << error_code;
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assert(out.size() <= fmt::internal::INLINE_BUFFER_SIZE);
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}
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void report_error(FormatFunc func,
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int error_code, fmt::StringRef message) FMT_NOEXCEPT{
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fmt::MemoryWriter full_message;
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func(full_message, error_code, message);
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// Use Writer::data instead of Writer::c_str to avoid potential memory
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// allocation.
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std::fwrite(full_message.data(), full_message.size(), 1, stderr);
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std::fputc('\n', stderr);
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}
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// IsZeroInt::visit(arg) returns true iff arg is a zero integer.
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class IsZeroInt : public fmt::internal::ArgVisitor<IsZeroInt, bool> {
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public:
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template <typename T>
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bool visit_any_int(T value) {
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return value == 0;
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}
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};
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// Checks if an argument is a valid printf width specifier and sets
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// left alignment if it is negative.
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class WidthHandler : public fmt::internal::ArgVisitor<WidthHandler, unsigned> {
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private:
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fmt::FormatSpec &spec_;
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FMT_DISALLOW_COPY_AND_ASSIGN(WidthHandler);
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public:
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explicit WidthHandler(fmt::FormatSpec &spec) : spec_(spec) {}
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void report_unhandled_arg() {
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FMT_THROW(fmt::FormatError("width is not integer"));
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}
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template <typename T>
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unsigned visit_any_int(T value) {
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typedef typename fmt::internal::IntTraits<T>::MainType UnsignedType;
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UnsignedType width = value;
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if (fmt::internal::is_negative(value)) {
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spec_.align_ = fmt::ALIGN_LEFT;
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width = 0 - width;
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}
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if (width > INT_MAX)
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FMT_THROW(fmt::FormatError("number is too big"));
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return static_cast<unsigned>(width);
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}
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};
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class PrecisionHandler :
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public fmt::internal::ArgVisitor<PrecisionHandler, int> {
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public:
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void report_unhandled_arg() {
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FMT_THROW(fmt::FormatError("precision is not integer"));
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}
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template <typename T>
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int visit_any_int(T value) {
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if (!IntChecker<std::numeric_limits<T>::is_signed>::fits_in_int(value))
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FMT_THROW(fmt::FormatError("number is too big"));
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return static_cast<int>(value);
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}
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};
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// Converts an integer argument to an integral type T for printf.
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template <typename T>
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class ArgConverter : public fmt::internal::ArgVisitor<ArgConverter<T>, void> {
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private:
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fmt::internal::Arg &arg_;
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wchar_t type_;
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FMT_DISALLOW_COPY_AND_ASSIGN(ArgConverter);
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public:
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ArgConverter(fmt::internal::Arg &arg, wchar_t type)
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: arg_(arg), type_(type) {}
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void visit_bool(bool value) {
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if (type_ != 's')
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visit_any_int(value);
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}
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template <typename U>
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void visit_any_int(U value) {
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bool is_signed = type_ == 'd' || type_ == 'i';
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using fmt::internal::Arg;
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if (sizeof(T) <= sizeof(int)) {
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// Extra casts are used to silence warnings.
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if (is_signed) {
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arg_.type = Arg::INT;
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arg_.int_value = static_cast<int>(static_cast<T>(value));
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}
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else {
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arg_.type = Arg::UINT;
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arg_.uint_value = static_cast<unsigned>(
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static_cast<typename fmt::internal::MakeUnsigned<T>::Type>(value));
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}
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}
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else {
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if (is_signed) {
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arg_.type = Arg::LONG_LONG;
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arg_.long_long_value =
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static_cast<typename fmt::internal::MakeUnsigned<U>::Type>(value);
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}
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else {
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arg_.type = Arg::ULONG_LONG;
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arg_.ulong_long_value =
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static_cast<typename fmt::internal::MakeUnsigned<U>::Type>(value);
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}
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}
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}
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};
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// Converts an integer argument to char for printf.
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class CharConverter : public fmt::internal::ArgVisitor<CharConverter, void> {
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private:
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fmt::internal::Arg &arg_;
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FMT_DISALLOW_COPY_AND_ASSIGN(CharConverter);
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public:
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explicit CharConverter(fmt::internal::Arg &arg) : arg_(arg) {}
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template <typename T>
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void visit_any_int(T value) {
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arg_.type = Arg::CHAR;
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arg_.int_value = static_cast<char>(value);
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}
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};
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} // namespace
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namespace internal {
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template <typename Char>
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class PrintfArgFormatter :
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public ArgFormatterBase<PrintfArgFormatter<Char>, Char> {
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void write_null_pointer() {
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this->spec().type_ = 0;
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this->write("(nil)");
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}
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typedef ArgFormatterBase<PrintfArgFormatter<Char>, Char> Base;
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public:
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PrintfArgFormatter(BasicWriter<Char> &w, FormatSpec &s)
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: ArgFormatterBase<PrintfArgFormatter<Char>, Char>(w, s) {}
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void visit_bool(bool value) {
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FormatSpec &fmt_spec = this->spec();
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if (fmt_spec.type_ != 's')
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return this->visit_any_int(value);
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fmt_spec.type_ = 0;
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this->write(value);
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}
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void visit_char(int value) {
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const FormatSpec &fmt_spec = this->spec();
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BasicWriter<Char> &w = this->writer();
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if (fmt_spec.type_ && fmt_spec.type_ != 'c')
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w.write_int(value, fmt_spec);
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typedef typename BasicWriter<Char>::CharPtr CharPtr;
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CharPtr out = CharPtr();
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if (fmt_spec.width_ > 1) {
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Char fill = ' ';
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out = w.grow_buffer(fmt_spec.width_);
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if (fmt_spec.align_ != ALIGN_LEFT) {
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std::fill_n(out, fmt_spec.width_ - 1, fill);
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out += fmt_spec.width_ - 1;
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}
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else {
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std::fill_n(out + 1, fmt_spec.width_ - 1, fill);
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}
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}
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else {
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out = w.grow_buffer(1);
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}
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*out = static_cast<Char>(value);
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}
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void visit_cstring(const char *value) {
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if (value)
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Base::visit_cstring(value);
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else if (this->spec().type_ == 'p')
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write_null_pointer();
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else
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this->write("(null)");
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}
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void visit_pointer(const void *value) {
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if (value)
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return Base::visit_pointer(value);
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this->spec().type_ = 0;
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write_null_pointer();
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}
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void visit_custom(Arg::CustomValue c) {
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BasicFormatter<Char> formatter(ArgList(), this->writer());
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const Char format_str[] = { '}', 0 };
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const Char *format = format_str;
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c.format(&formatter, c.value, &format);
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}
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};
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} // namespace internal
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} // namespace fmt
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FMT_FUNC void fmt::SystemError::init(
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int err_code, CStringRef format_str, ArgList args) {
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error_code_ = err_code;
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MemoryWriter w;
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internal::format_system_error(w, err_code, format(format_str, args));
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std::runtime_error &base = *this;
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base = std::runtime_error(w.str());
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}
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template <typename T>
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int fmt::internal::CharTraits<char>::format_float(
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char *buffer, std::size_t size, const char *format,
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unsigned width, int precision, T value) {
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if (width == 0) {
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return precision < 0 ?
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FMT_SNPRINTF(buffer, size, format, value) :
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FMT_SNPRINTF(buffer, size, format, precision, value);
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}
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return precision < 0 ?
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FMT_SNPRINTF(buffer, size, format, width, value) :
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FMT_SNPRINTF(buffer, size, format, width, precision, value);
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}
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template <typename T>
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int fmt::internal::CharTraits<wchar_t>::format_float(
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wchar_t *buffer, std::size_t size, const wchar_t *format,
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unsigned width, int precision, T value) {
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if (width == 0) {
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return precision < 0 ?
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FMT_SWPRINTF(buffer, size, format, value) :
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FMT_SWPRINTF(buffer, size, format, precision, value);
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}
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return precision < 0 ?
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FMT_SWPRINTF(buffer, size, format, width, value) :
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FMT_SWPRINTF(buffer, size, format, width, precision, value);
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}
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template <typename T>
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const char fmt::internal::BasicData<T>::DIGITS[] =
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"0001020304050607080910111213141516171819"
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"2021222324252627282930313233343536373839"
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"4041424344454647484950515253545556575859"
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"6061626364656667686970717273747576777879"
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"8081828384858687888990919293949596979899";
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#define FMT_POWERS_OF_10(factor) \
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factor * 10, \
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factor * 100, \
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factor * 1000, \
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factor * 10000, \
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factor * 100000, \
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factor * 1000000, \
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factor * 10000000, \
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factor * 100000000, \
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factor * 1000000000
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template <typename T>
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const uint32_t fmt::internal::BasicData<T>::POWERS_OF_10_32[] = {
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0, FMT_POWERS_OF_10(1)
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};
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template <typename T>
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const uint64_t fmt::internal::BasicData<T>::POWERS_OF_10_64[] = {
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0,
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FMT_POWERS_OF_10(1),
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FMT_POWERS_OF_10(fmt::ULongLong(1000000000)),
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// Multiply several constants instead of using a single long long constant
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// to avoid warnings about C++98 not supporting long long.
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fmt::ULongLong(1000000000) * fmt::ULongLong(1000000000) * 10
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};
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FMT_FUNC void fmt::internal::report_unknown_type(char code, const char *type) {
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(void)type;
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if (std::isprint(static_cast<unsigned char>(code))) {
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FMT_THROW(fmt::FormatError(
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fmt::format("unknown format code '{}' for {}", code, type)));
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}
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FMT_THROW(fmt::FormatError(
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fmt::format("unknown format code '\\x{:02x}' for {}",
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static_cast<unsigned>(code), type)));
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}
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#if FMT_USE_WINDOWS_H
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|
|
FMT_FUNC fmt::internal::UTF8ToUTF16::UTF8ToUTF16(fmt::StringRef s) {
|
|
static const char ERROR_MSG[] = "cannot convert string from UTF-8 to UTF-16";
|
|
if (s.size() > INT_MAX)
|
|
FMT_THROW(WindowsError(ERROR_INVALID_PARAMETER, ERROR_MSG));
|
|
int s_size = static_cast<int>(s.size());
|
|
int length = MultiByteToWideChar(
|
|
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, 0, 0);
|
|
if (length == 0)
|
|
FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
|
|
buffer_.resize(length + 1);
|
|
length = MultiByteToWideChar(
|
|
CP_UTF8, MB_ERR_INVALID_CHARS, s.data(), s_size, &buffer_[0], length);
|
|
if (length == 0)
|
|
FMT_THROW(WindowsError(GetLastError(), ERROR_MSG));
|
|
buffer_[length] = 0;
|
|
}
|
|
|
|
FMT_FUNC fmt::internal::UTF16ToUTF8::UTF16ToUTF8(fmt::WStringRef s) {
|
|
if (int error_code = convert(s)) {
|
|
FMT_THROW(WindowsError(error_code,
|
|
"cannot convert string from UTF-16 to UTF-8"));
|
|
}
|
|
}
|
|
|
|
FMT_FUNC int fmt::internal::UTF16ToUTF8::convert(fmt::WStringRef s) {
|
|
if (s.size() > INT_MAX)
|
|
return ERROR_INVALID_PARAMETER;
|
|
int s_size = static_cast<int>(s.size());
|
|
int length = WideCharToMultiByte(CP_UTF8, 0, s.data(), s_size, 0, 0, 0, 0);
|
|
if (length == 0)
|
|
return GetLastError();
|
|
buffer_.resize(length + 1);
|
|
length = WideCharToMultiByte(
|
|
CP_UTF8, 0, s.data(), s_size, &buffer_[0], length, 0, 0);
|
|
if (length == 0)
|
|
return GetLastError();
|
|
buffer_[length] = 0;
|
|
return 0;
|
|
}
|
|
|
|
FMT_FUNC void fmt::WindowsError::init(
|
|
int err_code, CStringRef format_str, ArgList args) {
|
|
error_code_ = err_code;
|
|
MemoryWriter w;
|
|
internal::format_windows_error(w, err_code, format(format_str, args));
|
|
std::runtime_error &base = *this;
|
|
base = std::runtime_error(w.str());
|
|
}
|
|
|
|
FMT_FUNC void fmt::internal::format_windows_error(
|
|
fmt::Writer &out, int error_code,
|
|
fmt::StringRef message) FMT_NOEXCEPT{
|
|
class String {
|
|
private:
|
|
LPWSTR str_;
|
|
|
|
public:
|
|
String() : str_() {}
|
|
~String() {
|
|
LocalFree(str_);
|
|
}
|
|
LPWSTR *ptr() {
|
|
return &str_;
|
|
}
|
|
LPCWSTR c_str() const { return str_; }
|
|
};
|
|
FMT_TRY{
|
|
String system_message;
|
|
if (FormatMessageW(FORMAT_MESSAGE_ALLOCATE_BUFFER |
|
|
FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS, 0,
|
|
error_code, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
|
|
reinterpret_cast<LPWSTR>(system_message.ptr()), 0, 0)) {
|
|
UTF16ToUTF8 utf8_message;
|
|
if (utf8_message.convert(system_message.c_str()) == ERROR_SUCCESS) {
|
|
out << message << ": " << utf8_message;
|
|
return;
|
|
}
|
|
}
|
|
} FMT_CATCH(...) {}
|
|
fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32.
|
|
}
|
|
|
|
#endif // FMT_USE_WINDOWS_H
|
|
|
|
FMT_FUNC void fmt::internal::format_system_error(
|
|
fmt::Writer &out, int error_code,
|
|
fmt::StringRef message) FMT_NOEXCEPT{
|
|
FMT_TRY{
|
|
MemoryBuffer<char, INLINE_BUFFER_SIZE> buffer;
|
|
buffer.resize(INLINE_BUFFER_SIZE);
|
|
for (;;) {
|
|
char *system_message = &buffer[0];
|
|
int result = safe_strerror(error_code, system_message, buffer.size());
|
|
if (result == 0) {
|
|
out << message << ": " << system_message;
|
|
return;
|
|
}
|
|
if (result != ERANGE)
|
|
break; // Can't get error message, report error code instead.
|
|
buffer.resize(buffer.size() * 2);
|
|
}
|
|
} FMT_CATCH(...) {}
|
|
fmt::format_error_code(out, error_code, message); // 'fmt::' is for bcc32.
|
|
}
|
|
|
|
template <typename Char>
|
|
void fmt::internal::ArgMap<Char>::init(const ArgList &args) {
|
|
if (!map_.empty())
|
|
return;
|
|
typedef internal::NamedArg<Char> NamedArg;
|
|
const NamedArg *named_arg = 0;
|
|
bool use_values =
|
|
args.type(ArgList::MAX_PACKED_ARGS - 1) == internal::Arg::NONE;
|
|
if (use_values) {
|
|
for (unsigned i = 0;/*nothing*/; ++i) {
|
|
internal::Arg::Type arg_type = args.type(i);
|
|
switch (arg_type) {
|
|
case internal::Arg::NONE:
|
|
return;
|
|
case internal::Arg::NAMED_ARG:
|
|
named_arg = static_cast<const NamedArg*>(args.values_[i].pointer);
|
|
map_.insert(Pair(named_arg->name, *named_arg));
|
|
break;
|
|
default:
|
|
/*nothing*/
|
|
;
|
|
}
|
|
}
|
|
return;
|
|
}
|
|
for (unsigned i = 0; i != ArgList::MAX_PACKED_ARGS; ++i) {
|
|
internal::Arg::Type arg_type = args.type(i);
|
|
if (arg_type == internal::Arg::NAMED_ARG) {
|
|
named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
|
|
map_.insert(Pair(named_arg->name, *named_arg));
|
|
}
|
|
}
|
|
for (unsigned i = ArgList::MAX_PACKED_ARGS;/*nothing*/; ++i) {
|
|
switch (args.args_[i].type) {
|
|
case internal::Arg::NONE:
|
|
return;
|
|
case internal::Arg::NAMED_ARG:
|
|
named_arg = static_cast<const NamedArg*>(args.args_[i].pointer);
|
|
map_.insert(Pair(named_arg->name, *named_arg));
|
|
break;
|
|
default:
|
|
/*nothing*/
|
|
;
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename Char>
|
|
void fmt::internal::FixedBuffer<Char>::grow(std::size_t) {
|
|
FMT_THROW(std::runtime_error("buffer overflow"));
|
|
}
|
|
|
|
FMT_FUNC Arg fmt::internal::FormatterBase::do_get_arg(
|
|
unsigned arg_index, const char *&error) {
|
|
Arg arg = args_[arg_index];
|
|
switch (arg.type) {
|
|
case Arg::NONE:
|
|
error = "argument index out of range";
|
|
break;
|
|
case Arg::NAMED_ARG:
|
|
arg = *static_cast<const internal::Arg*>(arg.pointer);
|
|
default:
|
|
/*nothing*/
|
|
;
|
|
}
|
|
return arg;
|
|
}
|
|
|
|
template <typename Char>
|
|
void fmt::internal::PrintfFormatter<Char>::parse_flags(
|
|
FormatSpec &spec, const Char *&s) {
|
|
for (;;) {
|
|
switch (*s++) {
|
|
case '-':
|
|
spec.align_ = ALIGN_LEFT;
|
|
break;
|
|
case '+':
|
|
spec.flags_ |= SIGN_FLAG | PLUS_FLAG;
|
|
break;
|
|
case '0':
|
|
spec.fill_ = '0';
|
|
break;
|
|
case ' ':
|
|
spec.flags_ |= SIGN_FLAG;
|
|
break;
|
|
case '#':
|
|
spec.flags_ |= HASH_FLAG;
|
|
break;
|
|
default:
|
|
--s;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
template <typename Char>
|
|
Arg fmt::internal::PrintfFormatter<Char>::get_arg(
|
|
const Char *s, unsigned arg_index) {
|
|
(void)s;
|
|
const char *error = 0;
|
|
Arg arg = arg_index == UINT_MAX ?
|
|
next_arg(error) : FormatterBase::get_arg(arg_index - 1, error);
|
|
if (error)
|
|
FMT_THROW(FormatError(!*s ? "invalid format string" : error));
|
|
return arg;
|
|
}
|
|
|
|
template <typename Char>
|
|
unsigned fmt::internal::PrintfFormatter<Char>::parse_header(
|
|
const Char *&s, FormatSpec &spec) {
|
|
unsigned arg_index = UINT_MAX;
|
|
Char c = *s;
|
|
if (c >= '0' && c <= '9') {
|
|
// Parse an argument index (if followed by '$') or a width possibly
|
|
// preceded with '0' flag(s).
|
|
unsigned value = parse_nonnegative_int(s);
|
|
if (*s == '$') { // value is an argument index
|
|
++s;
|
|
arg_index = value;
|
|
}
|
|
else {
|
|
if (c == '0')
|
|
spec.fill_ = '0';
|
|
if (value != 0) {
|
|
// Nonzero value means that we parsed width and don't need to
|
|
// parse it or flags again, so return now.
|
|
spec.width_ = value;
|
|
return arg_index;
|
|
}
|
|
}
|
|
}
|
|
parse_flags(spec, s);
|
|
// Parse width.
|
|
if (*s >= '0' && *s <= '9') {
|
|
spec.width_ = parse_nonnegative_int(s);
|
|
}
|
|
else if (*s == '*') {
|
|
++s;
|
|
spec.width_ = WidthHandler(spec).visit(get_arg(s));
|
|
}
|
|
return arg_index;
|
|
}
|
|
|
|
template <typename Char>
|
|
void fmt::internal::PrintfFormatter<Char>::format(
|
|
BasicWriter<Char> &writer, BasicCStringRef<Char> format_str) {
|
|
const Char *start = format_str.c_str();
|
|
const Char *s = start;
|
|
while (*s) {
|
|
Char c = *s++;
|
|
if (c != '%') continue;
|
|
if (*s == c) {
|
|
write(writer, start, s);
|
|
start = ++s;
|
|
continue;
|
|
}
|
|
write(writer, start, s - 1);
|
|
|
|
FormatSpec spec;
|
|
spec.align_ = ALIGN_RIGHT;
|
|
|
|
// Parse argument index, flags and width.
|
|
unsigned arg_index = parse_header(s, spec);
|
|
|
|
// Parse precision.
|
|
if (*s == '.') {
|
|
++s;
|
|
if ('0' <= *s && *s <= '9') {
|
|
spec.precision_ = parse_nonnegative_int(s);
|
|
}
|
|
else if (*s == '*') {
|
|
++s;
|
|
spec.precision_ = PrecisionHandler().visit(get_arg(s));
|
|
}
|
|
}
|
|
|
|
Arg arg = get_arg(s, arg_index);
|
|
if (spec.flag(HASH_FLAG) && IsZeroInt().visit(arg))
|
|
spec.flags_ &= ~HASH_FLAG;
|
|
if (spec.fill_ == '0') {
|
|
if (arg.type <= Arg::LAST_NUMERIC_TYPE)
|
|
spec.align_ = ALIGN_NUMERIC;
|
|
else
|
|
spec.fill_ = ' '; // Ignore '0' flag for non-numeric types.
|
|
}
|
|
|
|
// Parse length and convert the argument to the required type.
|
|
switch (*s++) {
|
|
case 'h':
|
|
if (*s == 'h')
|
|
ArgConverter<signed char>(arg, *++s).visit(arg);
|
|
else
|
|
ArgConverter<short>(arg, *s).visit(arg);
|
|
break;
|
|
case 'l':
|
|
if (*s == 'l')
|
|
ArgConverter<fmt::LongLong>(arg, *++s).visit(arg);
|
|
else
|
|
ArgConverter<long>(arg, *s).visit(arg);
|
|
break;
|
|
case 'j':
|
|
ArgConverter<intmax_t>(arg, *s).visit(arg);
|
|
break;
|
|
case 'z':
|
|
ArgConverter<std::size_t>(arg, *s).visit(arg);
|
|
break;
|
|
case 't':
|
|
ArgConverter<std::ptrdiff_t>(arg, *s).visit(arg);
|
|
break;
|
|
case 'L':
|
|
// printf produces garbage when 'L' is omitted for long double, no
|
|
// need to do the same.
|
|
break;
|
|
default:
|
|
--s;
|
|
ArgConverter<int>(arg, *s).visit(arg);
|
|
}
|
|
|
|
// Parse type.
|
|
if (!*s)
|
|
FMT_THROW(FormatError("invalid format string"));
|
|
spec.type_ = static_cast<char>(*s++);
|
|
if (arg.type <= Arg::LAST_INTEGER_TYPE) {
|
|
// Normalize type.
|
|
switch (spec.type_) {
|
|
case 'i':
|
|
case 'u':
|
|
spec.type_ = 'd';
|
|
break;
|
|
case 'c':
|
|
// TODO: handle wchar_t
|
|
CharConverter(arg).visit(arg);
|
|
break;
|
|
}
|
|
}
|
|
|
|
start = s;
|
|
|
|
// Format argument.
|
|
internal::PrintfArgFormatter<Char>(writer, spec).visit(arg);
|
|
}
|
|
write(writer, start, s);
|
|
}
|
|
|
|
FMT_FUNC void fmt::report_system_error(
|
|
int error_code, fmt::StringRef message) FMT_NOEXCEPT{
|
|
// 'fmt::' is for bcc32.
|
|
fmt::report_error(internal::format_system_error, error_code, message);
|
|
}
|
|
|
|
#if FMT_USE_WINDOWS_H
|
|
FMT_FUNC void fmt::report_windows_error(
|
|
int error_code, fmt::StringRef message) FMT_NOEXCEPT{
|
|
// 'fmt::' is for bcc32.
|
|
fmt::report_error(internal::format_windows_error, error_code, message);
|
|
}
|
|
#endif
|
|
|
|
FMT_FUNC void fmt::print(std::FILE *f, CStringRef format_str, ArgList args) {
|
|
MemoryWriter w;
|
|
w.write(format_str, args);
|
|
std::fwrite(w.data(), 1, w.size(), f);
|
|
}
|
|
|
|
FMT_FUNC void fmt::print(CStringRef format_str, ArgList args) {
|
|
print(stdout, format_str, args);
|
|
}
|
|
|
|
FMT_FUNC void fmt::print(std::ostream &os, CStringRef format_str, ArgList args) {
|
|
MemoryWriter w;
|
|
w.write(format_str, args);
|
|
os.write(w.data(), w.size());
|
|
}
|
|
|
|
FMT_FUNC void fmt::print_colored(Color c, CStringRef format, ArgList args) {
|
|
char escape[] = "\x1b[30m";
|
|
escape[3] = static_cast<char>('0' + c);
|
|
std::fputs(escape, stdout);
|
|
print(format, args);
|
|
std::fputs(RESET_COLOR, stdout);
|
|
}
|
|
|
|
FMT_FUNC int fmt::fprintf(std::FILE *f, CStringRef format, ArgList args) {
|
|
MemoryWriter w;
|
|
printf(w, format, args);
|
|
std::size_t size = w.size();
|
|
return std::fwrite(w.data(), 1, size, f) < size ? -1 : static_cast<int>(size);
|
|
}
|
|
|
|
#ifndef FMT_HEADER_ONLY
|
|
|
|
template struct fmt::internal::BasicData<void>;
|
|
|
|
// Explicit instantiations for char.
|
|
|
|
template void fmt::internal::FixedBuffer<char>::grow(std::size_t);
|
|
|
|
template void fmt::internal::ArgMap<char>::init(const fmt::ArgList &args);
|
|
|
|
template void fmt::internal::PrintfFormatter<char>::format(
|
|
BasicWriter<char> &writer, CStringRef format);
|
|
|
|
template int fmt::internal::CharTraits<char>::format_float(
|
|
char *buffer, std::size_t size, const char *format,
|
|
unsigned width, int precision, double value);
|
|
|
|
template int fmt::internal::CharTraits<char>::format_float(
|
|
char *buffer, std::size_t size, const char *format,
|
|
unsigned width, int precision, long double value);
|
|
|
|
// Explicit instantiations for wchar_t.
|
|
|
|
template void fmt::internal::FixedBuffer<wchar_t>::grow(std::size_t);
|
|
|
|
template void fmt::internal::ArgMap<wchar_t>::init(const fmt::ArgList &args);
|
|
|
|
template void fmt::internal::PrintfFormatter<wchar_t>::format(
|
|
BasicWriter<wchar_t> &writer, WCStringRef format);
|
|
|
|
template int fmt::internal::CharTraits<wchar_t>::format_float(
|
|
wchar_t *buffer, std::size_t size, const wchar_t *format,
|
|
unsigned width, int precision, double value);
|
|
|
|
template int fmt::internal::CharTraits<wchar_t>::format_float(
|
|
wchar_t *buffer, std::size_t size, const wchar_t *format,
|
|
unsigned width, int precision, long double value);
|
|
|
|
#endif // FMT_HEADER_ONLY
|
|
|
|
#ifdef _MSC_VER
|
|
# pragma warning(pop)
|
|
#endif |